Water injection lifting device

Abstract

The utility model provides a water injection lifting device which comprises a top cover and a water injection structure arranged in the top cover and slidably connected with the top cover, and further comprises a guide device comprising a first guide block and a second guide block which are arranged in the length direction of the water injection structure, the contact face of the water injection structure and the guide blocks is a sliding face, and the guide blocks are located at the two ends of the sliding face respectively; a lifting channel is formed in the top cover in the height direction of the top cover, the sliding face faces the channel, the guide block is slidably connected with the lifting channel, by means of sliding connection of the guide block and the lifting channel, the stability of the water injection structure in the lifting process is guaranteed, the warping phenomenon of the front end and the rear end is avoided, and through the design, the stability and accuracy of the water injection lifting device are improved; and the equipment structure is simplified, the size and the weight are reduced, the manufacturing cost is reduced, the service life is prolonged, and the reliability is improved.

Description

Technical Field

[0001] The present application relates to the field of floor scrubbing robots, and in particular to a water injection structure. Background Art

[0002] With the increasing use of floor scrubbers in household cleaning, many models are equipped with automatic water injection and lifting devices to improve the efficiency of the wet mopping function. The water injection and lifting devices are usually located in the cleaning module of the floor scrubber and deliver water to the mop or cleaning surface through a sliding or lifting mechanism. However, in existing water injection and lifting devices, the water injection structure often warps at the front and back ends during the lifting process. This warping problem is particularly obvious after long-term use. This phenomenon leads to uneven water flow distribution, affecting the cleaning effect and even causing problems such as water leakage and equipment damage. Therefore, maintaining the stability of the front and back ends of the water injection and lifting device during the lifting process is a technical problem that needs to be solved urgently.

[0003] In order to prevent the water injection lifting device from warping during the lifting process, several design solutions have been proposed in the prior art. For example, some water injection lifting devices enhance their overall rigidity by adding support structures at the top or bottom, in an effort to maintain the stability of the water injection structure during the lifting process. These support structures usually use fixed guides to limit the movement of the water injection structure through specific grooves to avoid tilting or warping during movement. In addition, some technologies increase the stability of the water injection lifting device by increasing the thickness of the outer shell of the water injection lifting device. However, although these existing technologies improve the stability of the water injection lifting device to a certain extent, they tend to increase the overall weight and volume of the device, and may also complicate the structure of the device.

[0004] Although these technical solutions have provided certain improvements to the warping problem of the water injection lifting device, their defects are still very obvious: the weight and volume of the equipment are increased, the manufacturing cost is high, and the maintenance is complicated. Especially in long-term use or frequent operation, the warping problem of the front and rear ends still exists and is difficult to solve completely. Therefore, it is necessary to provide a water injection lifting device that can solve the warping of the front and rear ends during the lifting process of the water injection lifting device, so as to solve the docking accuracy problem of the water injection port and the base station of the floor washing robot during the water injection process of the water injection lifting device. Utility Model Content

[0005] In view of this, it is necessary to provide a water injection lifting device that can solve the problem of warping at the front and rear ends of the water injection lifting device during the lifting process, so as to solve the above problems.

[0006] An embodiment of the present application provides a water injection lifting device, comprising a top cover and a water injection structure disposed within the top cover and slidably connected thereto, the water injection lifting device further comprising:

[0007] The guide device includes a first guide block and a second guide block arranged along the length direction of the water injection structure, wherein the contact surface between the water injection structure and the first guide block and the second guide block is a sliding surface, and when viewed in a direction perpendicular to the sliding surface, the first guide block and the second guide block are arranged at both ends of the sliding surface;

[0008] The top cover is provided with a lifting channel along its height direction, the sliding surface faces the lifting channel, and the first guide block and the second guide block are both slidably connected to the lifting channel.

[0009] In at least one embodiment of the present application, a sliding cover is provided at the lower end of the top cover, the sliding cover is slidably connected to the top cover, the top cover is provided with a lifting groove along its height direction, the inner wall of the sliding cover is provided with a turning groove, the lifting channel includes the lifting groove and the turning groove, and one end of the guide device passes through the lifting groove and abuts against the turning groove, and the guide device is slidably connected to the turning groove and the lifting groove.

[0010] In at least one embodiment of the present application, the steering groove includes a steering portion and a locking portion, the locking portion is arranged along the length direction of the sliding cover, and one end is bent downward to form the steering portion. When observed along the length direction of the locking portion, the acute angle formed by the central axis of the locking portion groove width and the central axis of the steering portion groove width is 30°~40°, and the trajectory of the guide device sliding along the steering portion is defined as the first trajectory, and the trajectory of the guide device sliding along the locking portion is defined as the second trajectory. When the guide device moves along the first trajectory and the second trajectory, it abuts against the lifting groove.

[0011] In at least one embodiment of the present application, the turning groove includes a first turning groove and a second turning groove, the lifting groove includes a first lifting groove and a second lifting groove, the first guide block passes through the first lifting groove and abuts the first turning groove, and the second guide block passes through the second lifting groove and abuts the second turning groove.

[0012] In at least one embodiment of the present application, the first guide block and the second guide block are symmetrically distributed along the central axis of the length of the water injection structure, and the distance from the top to the bottom of the water injection structure along the length direction is defined as x, the distance from the first guide block to the top is x / 5, and the distance from the second guide block to the top is 4x / 5.

[0013] In at least one embodiment of the present application, the water injection lifting device includes a bottom cover, which is arranged side by side with the top cover, and a sliding guide rail is provided along the length direction of the bottom cover, and the guide rail is buckled with the sliding cover and slidably connected to the guide rail.

[0014] In at least one embodiment of the present application, a receiving groove is provided in the bottom cover, a driving motor is provided in the receiving groove, the sliding cover includes a transmission part provided at one end, the driving motor abuts against the transmission part and is connected to the transmission part, and the driving motor drives the sliding cover to slide along the length direction of the sliding groove.

[0015] In at least one embodiment of the present application, the sliding cover is transmission-connected to the water injection structure, and the sliding cover has a contact surface along its length direction that can abut against the water injection structure. There is a minimum distance between the water injection structure and the contact surface, and the minimum distance increases or decreases along the sliding direction of the sliding cover.

[0016] In at least one embodiment of the present application, a water injection hole is provided on the top cover. When the guide structure abuts against the end of the locking portion, the water injection structure is engaged with the water injection hole, and the water injection lifting device injects water.

[0017] In at least one embodiment of the present application, the water injection structure includes a water outlet pipe disposed therein, one end of the water outlet pipe passes through the water injection structure, and the other end is connected to an external water source.

[0018] The water injection lifting device provided above is designed with a guide device in the water injection lifting device, including a first guide block and a second guide block arranged along the length direction of the water injection structure. The first guide block and the second guide block are respectively located at the front and rear ends of the water injection structure and contact the sliding surface of the water injection structure to form a stable sliding connection. A lifting channel is opened on the top cover, and the sliding surface of the water injection structure faces the channel, so that the guide block always slides along the channel during the lifting process. This design cleverly utilizes the sliding connection between the guide block and the lifting channel to effectively avoid the warping phenomenon that may occur at the front and rear ends of the water injection lifting device during lifting. By ensuring the stability and accuracy of the water injection structure during the lifting process, it not only improves the operating stability of the water injection lifting device, but also simplifies the equipment structure, reduces the volume and weight of the equipment, reduces the manufacturing cost, and improves the service life and reliability of the equipment. This combined design solves the warping problem while optimizing the overall performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a first axial exploded view of a water injection lifting device;

[0020] Figure 2 This is a partial structural diagram of a water injection lifting device;

[0021] Figure 3 A motion path of the guide structure along the second trajectory;

[0022] Figure 4 A movement route of the guide structure along the first trajectory;

[0023] Figure 5 It is the position of the guide structure when the water injection lifting device stops injecting water;

[0024] Figure 6 This is the structural diagram of the top cover;

[0025] Figure 7 It is a second axial exploded view of a water injection lifting device;

[0026] Figure 8 This is the structural diagram of the bottom cover;

[0027] Figure 9 A top view of a water injection lifting device;

[0028] Figure 10 This is a structural diagram of the water injection structure;

[0029] Figure 11 This is the structural diagram of the steering trough.

[0030] Description of main component symbols

[0031] 1. Top cover; 2. Water injection structure; 3. Guide device; 4. First guide block; 5. Second guide block; 6. Sliding surface; 7. Lifting channel; 8. Sliding cover; 9. Lifting slot; 10. Steering slot; 11. Steering part; 12. Locking part; 13. First track; 14. Second track; 15. First steering slot; 16. Second steering slot; 17. First lifting slot; 18. Second lifting slot; 19. Bottom cover; 20. Sliding guide rail; 21. Accommodating slot; 22. Driving motor; 23. Transmission part; 24. Water injection hole; 25. Water outlet pipe; 100. A water injection lifting device. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0033] It should be noted that when a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0034] An embodiment of the present application provides a water injection lifting device, comprising a top cover and a water injection structure disposed within the top cover and slidably connected thereto, the water injection lifting device further comprising:

[0035] The guiding device includes a first guide block and a second guide block arranged along the length direction of the water injection structure. The contact surface between the water injection structure and the first guide block and the second guide block is a sliding surface. When viewed in a direction perpendicular to the sliding surface, the first guide block and the second guide block are arranged at both ends of the sliding surface.

[0036] The top cover is provided with a lifting channel along its height direction, the sliding surface faces the lifting channel, and the first guide block and the second guide block are both slidably connected to the lifting channel.

[0037] The water injection lifting device provided above is designed with a guide device in the water injection lifting device, including a first guide block and a second guide block arranged along the length direction of the water injection structure. The first guide block and the second guide block are respectively located at the front and rear ends of the water injection structure and contact the sliding surface of the water injection structure to form a stable sliding connection. A lifting channel is opened on the top cover, and the sliding surface of the water injection structure faces the channel, so that the guide block always slides along the channel during the lifting process. This design cleverly utilizes the sliding connection between the guide block and the lifting channel to effectively avoid the warping phenomenon that may occur at the front and rear ends of the water injection lifting device during lifting. By ensuring the stability and accuracy of the water injection structure during the lifting process, it not only improves the operating stability of the water injection lifting device, but also simplifies the equipment structure, reduces the volume and weight of the equipment, reduces the manufacturing cost, and improves the service life and reliability of the equipment. This combined design solves the warping problem while optimizing the overall performance of the device.

[0038] The following is combined with Figure 1-11 , some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0039] The embodiment of the present application provides a water injection lifting device 100, comprising a top cover 1 and a water injection structure 2 disposed within the top cover 1 and slidably connected thereto. The water injection lifting device further comprises:

[0040] The guide device 3 includes a first guide block 4 and a second guide block 5 arranged along the length direction of the water injection structure 2. The contact surface between the water injection structure 2 and the first guide block 4 and the second guide block 5 is a sliding surface 6. When viewed in a direction perpendicular to the sliding surface 6, the first guide block 4 and the second guide block 5 are arranged at both ends of the sliding surface 6.

[0041] The top cover 1 is provided with a lifting channel 7 along its height direction, the sliding surface 6 faces the lifting channel 7 , and the first guide block 4 and the second guide block 5 are both slidably connected to the lifting channel 7 .

[0042] Specifically, a device for stable water injection is proposed, which includes a top cover 1 and a water injection structure 2 that can slide along the top cover 1. The water injection structure 2 can achieve stable up and down sliding through a guide device 3. The guide device 3 is composed of two guide blocks, which are respectively located at the two ends of the water injection structure 2, contacting the sliding surface 6 and guiding the water injection structure 2 to slide up and down in the top cover 1. The stability of the water injection structure 2 is effectively guaranteed by this guide design to prevent it from tilting or getting stuck. At the same time, a lifting channel 7 is provided in the top cover 1, so that the guide block maintains the precise position of the water injection structure 2 when sliding in the channel. The device is particularly suitable for industrial scenarios that require high-precision quantitative water injection, such as laboratories or precision processing equipment. The stability of the water injection action is guaranteed by the guide device 3, and operational errors are reduced. During the operation, the user starts the equipment, and the water injection structure 2 slides along the guide block in the top cover 1. When it reaches the top, the water injection action can be achieved.

[0043] In a specific example, a sliding cover 8 is provided at the lower end of the top cover 1, and the sliding cover 8 is slidably connected to the top cover 1. The top cover 1 is provided with a lifting groove 9 along its height direction, and a turning groove 10 is provided on the inner wall of the sliding cover 8. The lifting channel 7 includes the lifting groove 9 and the turning groove 10, and one end of the guide device 3 passes through the lifting groove 9 and abuts against the turning groove 10, and the guide device 3 is slidably connected to the turning groove 10 and the lifting groove 9.

[0044] Specifically, the sliding cover 8 is connected to the top cover 1 through a sliding fit. This design allows the sliding cover 8 to move up and down on the top cover 1 without binding or excessive friction. This ensures the stability and smooth operation of the water injection structure 2 during use. The flexible movement of the sliding cover 8 also adapts to the needs of the water injection structure 2 under different operating conditions, improving the adaptability and reliability of the device. A lifting slot 9 is provided within the top cover 1, while a turning slot 10 is provided on the inner wall of the sliding cover 8. This structure enables the water injection structure 2 to slide in multiple directions during movement. The lifting slot 9 allows the water injection structure 2 to rise or fall vertically, while the turning slot 10 provides horizontal and other directional adjustment capabilities. This design enhances the functionality of the device, ensuring that the water injection structure 2 remains stable even under complex operating conditions. The guide device 3 passes through the lifting slot 9 and contacts the turning slot 10, ensuring that the water injection structure 2 can accurately move between the lifting slot 9 and the turning slot 10 during sliding. The sliding fit between the guide device 3's contact surface and the slot wall ensures that the water injection structure 2 maintains the correct position and angle during lifting and turning, avoiding unnecessary errors and movement resistance. This design improves the operating precision and flexibility of the water injection lifting mechanism, making the water injection process smoother and more stable. The arrangement of the sliding cover 8, in conjunction with the guide mechanism 3, not only extends the device's service life but also reduces malfunctions caused by unstable movement. This design is suitable for applications requiring high water injection precision, such as automated production lines or water injection operations in precision equipment, ensuring efficient and stable operation.

[0045] In a specific example, the steering groove 10 includes a steering portion 11 and a locking portion 12. The locking portion 12 is arranged along the length direction of the sliding cover 8, and one end is bent downward to form the steering portion 11. When observed along the length direction of the locking portion 12, the acute angle formed by the center axis of the groove width of the locking portion 12 and the center axis of the groove width of the steering portion 11 is 30°~40°. The trajectory of the guide device 3 sliding along the steering portion 11 is defined as the first trajectory 13, and the trajectory of the guide device 3 sliding along the locking portion 12 is defined as the second trajectory 14. When the guide device 3 moves along the first trajectory 13 and the second trajectory 14, it abuts against the lifting groove 9.

[0046] Specifically, the design of the steering portion 11 and locking portion 12 of the steering trough 10 enables the guide device 3 to smoothly transition between two different trajectories. The design of the steering portion 11 and locking portion 12 allows the guide device 3 to adjust its direction when sliding along the steering portion 11, while maintaining a stable position when sliding along the locking portion 12. This structure optimizes stability during the sliding process and reduces errors in the water injection structure 2. The design of the steering portion 11 and locking portion 12 of the steering trough 10 enables the guide device 3 to smoothly transition between two different trajectories. The design of the steering portion 11 and locking portion 12 allows the guide device 3 to adjust its direction when sliding along the steering portion 11, while maintaining a stable position when sliding along the locking portion 12. This structure optimizes stability during the sliding process and reduces errors in the water injection structure 2. This design enables the water injection lifting device to maintain a stable motion trajectory in complex operating environments, improving the accuracy of the water injection process. It is suitable for applications with high requirements for directional adjustment and stability, such as water injection lifting devices in automated production lines, ensuring efficient and precise operation.

[0047] In a specific example, the turning groove 10 includes a first turning groove 15 and a second turning groove 16, the lifting groove 9 includes a first lifting groove 17 and a second lifting groove 18, the first guide block 4 passes through the first lifting groove 17 and abuts the first turning groove 15, and the second guide block 5 passes through the second lifting groove 18 and abuts the second turning groove 16.

[0048] Specifically, the first guide block 4 and the second guide block 5 respectively pass through the corresponding lifting groove 9 and turning groove 10 to ensure that the guide device 3 moves smoothly between the grooves. This design enables the water injection lifting device to accurately control the position during the lifting and turning process, avoiding instability during the movement process. The first guide block 4 and the second guide block 5 respectively pass through and abut the corresponding lifting groove 9 and turning groove 10 to ensure that the guide device 3 can be accurately positioned during the movement. This structural design improves the stability and accuracy of the water injection lifting device. The design improves the stability and accuracy of the water injection lifting device during movement through precise guide block setting and groove body design, and is suitable for application scenarios with high requirements for position accuracy, such as automated water injection systems.

[0049] In a specific example, the first guide block 4 and the second guide block 5 are symmetrically distributed along the length axis of the water injection structure 2, and the distance from the top to the bottom of the water injection structure 2 along the length direction is defined as x, the distance from the first guide block 4 to the top is x / 5, and the distance from the second guide block 5 to the top is 4x / 5.

[0050] Specifically, the first guide block 4 and the second guide block 5 are symmetrically distributed along the central axis of the length of the water injection structure 2, with the distance from the top to the bottom being x, the distance from the first guide block 4 to the top being x / 5, and the distance from the second guide block 5 to the top being 4x / 5. This symmetrical distribution enables the water injection structure 2 to maintain balance during movement, avoiding unstable movement caused by uneven positions of the guide blocks. The symmetrically distributed guide block design enables the water injection structure 2 to be evenly subjected to guiding forces during lifting and lowering movements, thus avoiding unstable movement or tilting caused by uneven guiding forces. The symmetrical setting of the guide blocks ensures the stability of the water injection structure 2 during movement, and the symmetrical distribution can effectively share the guiding force, thereby improving the balance and operational accuracy of the device. This design ensures that the water injection lifting device can maintain good stability and balance during use, and is suitable for water injection application scenarios that require high stability, such as water injection systems in precision production equipment.

[0051] In a specific example, the water injection lifting device includes a bottom cover 19, which is arranged in parallel with the top cover 1, and a sliding guide rail 20 is provided along the length direction of the bottom cover 19. The guide rail is buckled against the sliding cover 8 and is slidably connected to the guide rail.

[0052] Specifically, the connection between the sliding guide rail 20 of the bottom cover 19 and the sliding cover 8 enables the sliding cover 8 to slide smoothly on the bottom cover 19, thereby improving the overall stability and operational accuracy of the water injection lifting device. The coordinated design of the sliding guide rail 20 of the bottom cover 19 and the sliding cover 8 ensures the smoothness of the sliding process and avoids operational problems caused by poor sliding. The parallel arrangement of the bottom cover 19 and the design of the sliding guide rail 20 improve the stability and load-bearing capacity of the water injection lifting device, and is suitable for water injection systems that require additional support and stability.

[0053] In a specific example, a receiving groove 21 is opened in the bottom cover 19, and a driving motor 22 is provided in the receiving groove 21. The sliding cover 8 includes a transmission part 23 provided at one end. The driving motor 22 abuts against the transmission part 23 and is connected to the transmission part 23. The driving motor 22 drives the sliding cover 8 to slide along the length direction of the sliding groove.

[0054] Specifically, a accommodating groove 21 is provided in the bottom cover 19, and a driving motor 22 is installed therein. A transmission part 23 is provided at one end of the sliding cover 8. The driving motor 22 drives the sliding cover 8 to slide along the sliding groove through the transmission part 23. This design enables the sliding cover 8 to slide precisely on the bottom cover 19, thereby realizing precise control of the water injection structure 2. The coordinated design of the driving motor 22 and the transmission part 23 enables the sliding cover 8 to slide smoothly in the sliding groove. The setting of the motor provides power support, ensuring the reliable movement of the sliding cover 8. This design improves the automation level and precise control capability of the water injection lifting device by driving the movement of the sliding cover 8 by the motor, and is suitable for water injection application scenarios requiring high precision and automation.

[0055] In a specific example, the sliding cover 8 is transmission-connected to the water injection structure 2. The sliding cover 8 has a contact surface along its length direction that can abut against the water injection structure 2. There is a minimum distance between the water injection structure 2 and the contact surface. The minimum distance increases or decreases along the sliding direction of the sliding cover 8.

[0056] Specifically, this design ensures effective transmission between the sliding cover 8 and the water injection structure 2, and can adjust the minimum distance as needed to adapt to different working conditions. The transmission connection between the sliding cover 8 and the water injection structure 2 is carried out through the contact surface, ensuring that the sliding cover 8 can effectively contact and transmit with the water injection structure 2 during movement. This design improves the operating accuracy and flexibility of the device. The change in the minimum distance between the contact surface and the water injection structure 2 enables the device to adjust the contact state under different working conditions, thereby improving the adaptability of the water injection lifting device.

[0057] In a specific example, a water injection hole 24 is opened on the top cover 1. When the guide structure abuts against the end of the locking portion 12, the water injection structure 2 is engaged with the water injection hole 24, and the water injection lifting device injects water.

[0058] Specifically, a water injection hole 24 is designed on the top cover 1. When the guide device 3 slides to the end of the locking portion 12, the water injection structure 2 automatically engages with the water injection hole 24, enabling water injection. This design ensures that the water injection process is initiated at the appropriate time and location, avoiding leakage or malfunction caused by operational errors. It is suitable for precision equipment requiring high operational accuracy, such as the precise water injection operation of a floor scrubbing robot base station.

[0059] In a specific example, the water injection structure 2 includes a water outlet pipe 25 disposed therein. One end of the water outlet pipe 25 passes through the water injection structure 2 , and the other end is connected to an external water source.

[0060] Specifically, a water outlet pipe 25 is provided within the water injection structure 2, one end of which is connected to the water injection structure 2 and the other end is connected to an external water source, ensuring a continuous and stable water supply to the water injection structure 2. This design enables the water injection and lifting device to operate continuously for a long time, making it suitable for applications requiring high flow or long-term water injection, such as during the mopping process of a floor scrubber robot, and ensures the stability and reliability of the water injection process.

[0061] The above is only an implementation method of the present application. It should be pointed out that for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present application, but these all fall within the scope of protection of the present application.

Claims

1. A water filling lifting device, comprising a top cover and a water filling structure arranged in the top cover and slidably connected thereto, characterized in that: The water injection lifting device also includes: The guide device includes a first guide block and a second guide block arranged along the length direction of the water injection structure, wherein the contact surface between the water injection structure and the first guide block and the second guide block is a sliding surface, and when viewed in a direction perpendicular to the sliding surface, the first guide block and the second guide block are arranged at both ends of the sliding surface; The top cover is provided with a lifting channel along its height direction, the sliding surface faces the lifting channel, and the first guide block and the second guide block are both slidably connected to the lifting channel.

2. The water injection lifting device according to claim 1, characterized in that: A sliding cover is provided at the lower end of the top cover, and the sliding cover is slidably connected to the top cover. A lifting groove is provided on the top cover along its height direction, and a turning groove is provided on the inner wall of the sliding cover. The lifting channel includes the lifting groove and the turning groove, and one end of the guide device passes through the lifting groove and abuts against the turning groove, and the guide device is slidably connected to the turning groove and the lifting groove.

3. The water injection lifting device according to claim 2, characterized in that: The steering groove includes a steering portion and a locking portion. The locking portion is arranged along the length direction of the sliding cover, and one end is bent downward to form the steering portion. When observed along the length direction of the locking portion, the acute angle formed by the center axis of the locking portion groove width and the center axis of the steering portion groove width is 30°~40°. The trajectory of the guide device sliding along the steering portion is defined as the first trajectory, and the trajectory of the guide device sliding along the locking portion is defined as the second trajectory. When the guide device moves along the first trajectory and the second trajectory, it abuts against the lifting groove.

4. The water injection lifting device according to claim 2, characterized in that: The steering groove includes a first steering groove and a second steering groove, the lifting groove includes a first lifting groove and a second lifting groove, the first guide block passes through the first lifting groove and abuts the first steering groove, and the second guide block passes through the second lifting groove and abuts the second steering groove.

5. The water injection lifting device according to claim 1, characterized in that: The first guide block and the second guide block are symmetrically distributed along the central axis of the water injection structure, and the distance from the top to the bottom of the water injection structure along the length direction is defined as x, the distance from the first guide block to the top is x / 5, and the distance from the second guide block to the top is 4x / 5.

6. The water injection lifting device according to claim 3, characterized in that: The water injection lifting device includes a bottom cover, which is arranged in parallel with the top cover. A sliding guide rail is provided along the length direction of the bottom cover. The guide rail is buckled with the sliding cover and is slidably connected to the guide rail.

7. The water injection lifting device according to claim 6, characterized in that: The sliding cover is transmission-connected to the water injection structure. The sliding cover has a contact surface along its length that can abut against the water injection structure. There is a minimum distance between the water injection structure and the contact surface. The minimum distance increases or decreases along the sliding direction of the sliding cover.

8. The water injection lifting device according to claim 1, characterized in that: The water injection structure includes a water outlet pipe arranged inside the water injection structure. One end of the water outlet pipe passes through the water injection structure, and the other end is connected to an external water source.

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